Lyle, thanks will watch for Chint with interest. Just as an asside have you used any of these, and if so what do the RCD tests come out like? my experience is that on cheapy gear they test very close to the top end of the range ie 37,38,39 m.secs then after a few years service with no testing they then fail to test within the recomended times, so you finish up having to change them. I would be interested to hear from you on that one.
